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Custom YouTube Video Seeking

Stops YouTube Video From Downloading.

As of 2014-08-12. See the latest version.

// ==UserScript==
// @name           Custom YouTube Video Seeking 
// @namespace      http://www.diamonddownload.weebly.com
// @description    Stops YouTube Video From Downloading.
// @include        http://*.youtube.com/*
// @include        http://youtube.com/*
// @include        https://*.youtube.com/*
// @include        https://youtube.com/*
// @grant          none
// @version        1.0
// @run-at         document-body
// @author         R.F Geraci
// ==/UserScript==

//============CUSTOM SETTINGS============
var showPauseButton = true;
var showBackwardsSeekButton = false;
var showForwardsSeekButton = true;
//=======================================

var toggle = false;
var btn;
var Tbox;
var SeekBBtn;
var SeekFBtn;
var label;

var p = document.getElementsByClassName('video-stream html5-main-video')[0];
var container = document.getElementById('watch7-user-header');

function stopvidload(){
    
    if (p){
        toggle = !toggle;
        
        if (toggle){
            
            btn.innerText = "Play Video";
            p.pause();
        }else{
            
            btn.innerText = "Stop Video";
            p.play();
        }
    } 
}

function seekForward(){
    if (Tbox.value != "" && Tbox.value > 0){
        var int = parseInt(Tbox.value, 10);
        p.currentTime += int;      
    }
}

function seekBackward(){
    if (Tbox.value != "" && Tbox.value > 0){
        var int = parseInt(Tbox.value, 10);
        p.currentTime -= int;      
    }
}

btn = document.createElement('button');
btn.id = 'stop-download';
btn.type = 'button';
btn.title =  'Stop Youtube Download';
btn.className ='yt-subscription-button yt-uix-button yt-uix-button-subscribe-branded';
btn.setAttribute('style', 'margin-left: 5px; outline: none;');
btn.innerText = "Stop Video";
container.appendChild(btn);
btn.addEventListener('click',stopvidload, true);


if (showPauseButton == true){
    btn.style.display = "inline-block";
}else{
    btn.style.display = "none";
}


SeekBBtn = document.createElement('button');
SeekBBtn.id = 'Seek-B-Increment';
SeekBBtn.type =  'button';
SeekBBtn.title = 'Seek Backward';
SeekBBtn.className = 'yt-subscription-button yt-uix-button yt-uix-button-subscribe-branded';
SeekBBtn.setAttribute('style', 'margin-left: 5px; outline: none; width: 25px;');
SeekBBtn.innerText = "◄";
container.appendChild(SeekBBtn);
SeekBBtn.addEventListener('click',seekBackward, true);


if (showBackwardsSeekButton == true){
    SeekBBtn.style.display = "inline-block";
}else{
    SeekBBtn.style.display = "none";
}

SeekFBtn = document.createElement('button');
SeekFBtn.id = 'Seek-F-Increment';
SeekFBtn.type =  'button';
SeekBBtn.title = 'Seek Forward';
SeekFBtn.className = 'yt-subscription-button yt-uix-button yt-uix-button-subscribe-branded';
SeekFBtn.setAttribute('style', 'margin-left: 5px; outline: none; width: 25px;');
SeekFBtn.innerText = "►";
container.appendChild(SeekFBtn);
SeekFBtn.addEventListener('click',seekForward, true);

if (showForwardsSeekButton == true){
    SeekFBtn.style.display = "inline-block";
}else{
    SeekFBtn.style.display = "none";
}

if (showForwardsSeekButton || showBackwardsSeekButton){
    Tbox = document.createElement('input');
    Tbox.id = 'Increment-value';
    Tbox.type ='number';
    Tbox.setAttribute('style', 'position: relative; top: 2px; margin-left: 5px; outline: none; width: 35px;');
    Tbox.value = "5";
    Tbox.min = "0";
    Tbox.setAttribute('maxlength', "5");
    container.appendChild(Tbox);
    
    label = document.createElement('label');
    label.id = 'Seek-Label';
    label.type = 'text';
    label.setAttribute('style', 'position: relative; top: 2px; margin-left: 5px; outline: none;');
    label.innerText = "Seconds";
    container.appendChild(label);
}
p.onpause = function(){btn.innerText = "Play Video";};
p.onplay = function(){btn.innerText = "Stop Video";};